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COMBINED EJECTOR AND INJECTOR.

No. 323,503. Patented Aug. 4, 1885.

U ITED STATES ATENT much.

DAVID M. FERGUS AND JAMES A. GRIFFITHS, OF PHILADELPHIA, PA.

COMBINED EJECTOR AND INJECTOR.

SPECIFICATION forming part of Letters Patent No. 323,503,6ated August 4, 1885.

Application filed September 3, 1884.

To all whom it nuty concern.-

Be it known that we, DAVID M. FERGUS and James A. GRIFFITHS, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and use i'ul Improvements in Combined Ejectors and Injectors; and we do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawing, which form part of this specification, in which the figure is alongitudinal vertical section of a combined ejector and injector embodying our improvements.

Our invention has relation to that class of devices or machines composed of an ejector and injector combined, the former operating to lift fluids and the latter to force the same into a steam-boiler or against pressure.

Qur improvements have for their object to simplify the construction, to reduce the eX- pense, and increase the efficiency of the machine. Said improvements consist. first, in the peculiar construction of the shell or body of the machine; and, second, in the combination therewith of the other parts, as hereinafter fully described and specifically claimed.

Referring to the accompanying drawing, Arepresents the body or shell of the machine, having a steam-inlet, B, a Water-supply pipe, 0, an overfiowoutlet, D, and a discharge-connection, E, for the boiler. F is a steam-nozale, and G the combining and discharging tube of the ejector, located in a chamber, O,above thewater-supply pipe. Histhesteam-nozzle, and I I the combining and discharging tubes of the injector. K L Mare valves, the special purposes and operation of which will hereinafter be fully described. In themselves we lay no claim, broadly, to any of the foregoing parts, but only to the special construction hereinafter fully set forth.

N is a pipe cast integral with the body A, and forming an outside connection between the steam-inlet B and the water-chamber G, in which the ejector-tubes are located, said pipe being prolonged into said chamber and carrying the nozzle F. It will be noted that the tubes F and G are in line with the steaminlet- B. In constructing the machine these tubes are passed down through said steam-in- Model.)

let and secured, respectively,in the end of pipe N and in the bridge 0. To close communication from the steam-inlet B with the interior of the machine, except by way of pipe N, a plug, 0, is screwed into the bridge or bearing at 0, after the tubes F and G have been insorted.

The injector-nozzle H and the adjacent or receiving end of tube I, as well as the dis charging-end of tube G, are located in a chamber, P, whose boundaries are the walls of the shell A and the bridges c and 0. The inlet for water to this chamber is through the tube G. The outlet is through valve L when the latter is opened, and through tube I when said valve L is closed into another chamber, Q. in which are located the adjacent ends of the tubes I I.

The method of operation of the machine is as follows: At starting, valve K is closed against the adjacent end of the steam-nozzle H, valve L opened, and valve III pressing againstits seat. Steam being admitted through inlet B passes wholly by way of pipe N tothe ejector and raises water through supply-pipe 0 into chamber C. From the chamber 0 the water is ejected into chamber P, completely surrounding and submerging the exposed part of nozzle H and the adjacent end of tube I. The water passes from chamber P through passage 1) and valve L into chamber Q, in which latter chamber the discharging end of tube I is located and thence to and out of the overflow-pipe D, the valve M opening automatically. Valve L is now closed, whereupon the water passes from chamber P th rough tube I and still overflows through pipe D. Valve K is next opened, admitting steam through nozzle H and forcing water from chamber P through the discharging and combining tubes 1 and I into the boiler. Valve M then automatically closes, shutting off the overflow. The lifting and feeding operation then proceeds until suspended. Valve IiI may be dis pensed with, it desired,'as it is used only to prevent noise.

The provision of the pipe N permits steam to be taken at the top of the machine yet admitted to the ejector below the tubes of the latter. The ejector-tubes being aligned with the steam-pipe may be passed in through the latter, the plug 0 closing up the enteringpassage and preventing communication except through pipe N. The water-chamber P completely surrounds the nozzle H and the adjacent ends of tubes G and I, so that the water lifted by the ejector submerges the same directly, thus obtaining the best effects for purposes of condensation.

The general construction of the shell permits the body to be made in a single'casting, the internal tubes and the valves being easily fitted thereto.

WVe may substitute for the various tubes F,

- G, H, I, and I other tubes of different constrnction,as our invention is not limited to the said tubes or any particular form thereof, and in case of such change we may substitute for the automatic valve M a globe or other manually-operated valve.

It will be noted that in this invention the ejector is located in a plane below the injector,

the pipe N, arranged as shown, cast integral with the body or shell and extended or projected into said chamber and carrying the steam-nozzle F, said nozzle being above the water-supply pipe 0 and aligned axially therewith, substantially as shown and described.

2. In a combined ejector and injector having the ejector located below the injector, and

the tubes of the former transverse to the axial plane of the latter, both being contained in a single shell or body, awater-chamber, P, having for its boundaries the walls of the shell and the two bridges which sustain the combining and discharging tubes of the ejector and injector, the discharging end of the ejector-tube, the steam-nozzle of the injector, and the receiving end of the injector combining tube being located in said chamber, substantially as shown and described.

3. In a combined ejector and injector having a waterchamber, P, in which are located the discharge end of theejector-tube, the receiving end of the injector combining tube and the injector'nozzle, the combination, with said chamber and the chamber Q, in which is located the discharging end only of the injector-tube I, of a passage, 19, and valve L, whereby the lifted water is caused to be directly discharged from the ejector on the injectortubes and to submerge the latter, and thepassage-way between said chambers opened in the preliminary lifting and closed when the injector is forcing, substantially as shown and described.

4. In a combined ejector and injector in which the ejector-tubes are aligned with the steam-inlet of the machine, the plug 0, which closes up the entranceopening for said tubes, substantially as shown and described.

In testimony that we claim the foregoing we have hereunto set our hands this 27th day of August, 1884.

DAVID M. FERGUS. JAMES A. GRIFFITHS. 

